Home >> BMW >> 2010 >> 550i Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes - DTC P0035 - DTC P0480 (N63 & S63) >> Diagnostic Trouble Codes (DTCS) MSD85 - Bn2020 >> DTC P112D, BMW Hex Code 0x128F02, BMW Code 1216258: O2 Sensor Negative Current or Positive Current Control Circuit/Open (Bank 2 Sensor 1) >> Repair procedures (plant/service)